Fire box



F. L. McGAHAN, DECD. v. K. WALKER, ADMINISTRATRIX,

FIRE BOX. APPLICATION FILED JAN-'17, 191 9.

Patented July: 18, 1922.

INVENTORZ FREDERICK L. MCGAHAN, or LOS ANG-ELE-S, CALIFORNIA; vioLA K. WALKER, ADMIN- rs rzaararx or SAID FHEDERICKL. ivrceanan, DECEASED, assrenon TO THE PUR- POSED MIND DEVELOPMENT SECURITY ASSOCIATION OF THE WORLD, A TRUST COMPANY.

FIRE BOX.

messes.

Specification of Letters Patent.

Patented July 18, 1922.

Original application filed January 3, 1918 Serial No. 210,146. Eatent No. 1,292,399. Divided and. this application filed January 17, 1919. Serial No. 271,715.

the fire-box of the locomotive, which firebox is provided with a nozzle or a plurality of nozzles for feed thereinto of powdered fuel.

part of this specification, in which like numbers of reference denote like parts wherever they occur,

Fig. 1 is a sectional view on the line 1-1 1 of Fig. 2 and shows part of the engine cab in elevation and the fire-box in section.

Fig. 2 is a side elevation of an engine cab partly broken away and shows the fire-box and fuel inlets in section.

Thefire-box 1 is located in the usual relation to the cab 2 and fuel, preferably pul verized, is normally fed to the fire-box 1. through the inlets 6. I

The fuel is forced by any suitable means, such as shown by prior Patent 1,292,399,

through the flexible joint 4- and pipeso,

communicating wtih pipes 6, and is sucked through nozzles 7 by any suitable'suction means or by the natural draft through the fire-box. Y

. The fire-box is providedwith the usual grate-bars 8 upon which rests a longitudinal arch 9 which is located opposite the openings or nozzles 7, the object being that the powdered fuel is drawn into the fire-box 1 against the arch 9 and is diverted and directed upwardly from the point of entrance into the fire-box to the upper part thereof. The arch 9 is elongated and approximately half egg-shaped in cross section as shown and thus directs the fuel as just described and the upward forcing of the fuel is ac centuated by the heated airin the lower part of the fire-box 1, which heated air, rising, carries the powdered fuel with it. It will thus be seen that the fuel maybe continuously fed into the fire-box, which is preferable to the interrupted or spasmodic firing by firemen, as it results in greater certainty and regularity of fuel supply which is necessary for a regular and reliable head of steam.

Another advantage of this mode of firing resides in the heating of the particles of powdered fuel in the upper part of the firebox 1 before the same settle upon the ratebars 8, while in addition, the fuel is eing simultaneously consumed in all parts of the In the accompanying drawings forming fire-boxfinstead merely in bank of coals upon the grate-bars 8. Thus quicker and more certain and more complete combustion is obtained.

The arch 9 is provided with the ridge 11,

'9 to the upper part of the fire-box from which the products of combustion are drawn into and through the, fire-tubes 10 in the well' known manner.

Having thus described this invention, I

hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as

it is evident that many minor changes may be made therein withoutdeparting from the spirit of this invention or the scope of the following claim.

I claim: I

A fire-box for locomotives comprising-a casing having end and sidewalls and grate bars forming the bottom of the fire-box, in combination with a tube sheet forming one end wall of the fire-box, horizontal fire tubes extending from said. tube sheet, an elongated deflector having upwardly-converging side walls in the fire-box and positioned above deflector, and means for creating a draft the grate bars, the top surface of said dethrough the fire box whereby the products fleotor beingbelow the said fire tubes, fuel of combustion are drawn from the fire-box 10 discharge nozzles extending through oppoand through the fire tubes.

site sides of the fire box and below the top In testimony whereof I hereunto afiix my of said deflector for delivering the charge signature. v V

of powdered. fuel. against the sides of. said FREDERICK 'L. MoG-AHAN. 

